C'mon Digimon 

A one-shot pilot manga, involving battles between more-or-less holographic Digimon. However, this manga was published as a special in volume two of Digimon Adventure V-Tamer 01, where an omake page by the author explained that the hero of this manga, Kentarou Kamon, was the source and inspiration for the design and character of Taichi Yagami, the protagonist of V-Tamer 01. Note: Published in Akamaru Jump 1997 Summer